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How would I diagnose a GDM crash after login. I can still SSH into the machine and I've been "fixing" broken shell session with:

$ sudo systemctl stop gdm
$ sudo systemctl start gdm

What logs would I need to look at to begin diagnosis?

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    You need to check the output of journalctl -rxu gdm
    – Raffa
    Commented Aug 25, 2023 at 14:35
  • Found this in the output: gkr-pam: unable to locate daemon control file. Trying this fix: askubuntu.com/questions/1144153/…
    – Andor Kiss
    Commented Aug 25, 2023 at 15:41
  • @Raffa This is the only output: GLib: Source ID 203 was not found when attempting to remove it
    – Andor Kiss
    Commented Aug 29, 2023 at 14:05
  • Nope, that didn't fix it - going to try a different greeter.
    – Andor Kiss
    Commented Sep 1, 2023 at 14:19

1 Answer 1

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Okay, problem solved.

I installed lightdm as the greeter and am using that. Note, I am not installing UNITY, but rather just the lightdm for the role of entering the password and logging into the GNOME shell GUI which remains unaltered.

I also needed to make sure that lightdm didn't put the machine to sleep when logged out and or "Switch Users" was chosen. To accomplish this, I followed the following post: How to disable suspend in 20 minutes from the lightdm login screen?

This has solved my issue with Ubuntu 22.04 LTS, AMD RYZEN Threadripper and an NVIDIA RTX4090 using the propreitary 530 driver.

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